Volcanic phenomena

As well as the water-filled maars, the Eifel has other special volcanic features.

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As well as the water-filled maars, the Eifel has other special volcanic features. These include the “Wallender Born”, or “boiling spring” cold water geyser, which breaks out every 30 minutes or so. Or maars which have already silted over and the only mountain crater lake north of the Alps (Windsborn crater lake). In old stone quarries, you can take a close look at lava flows.